Experiments with hammer.js

by Mohammed Ismail Ansari

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/hammer.js/2.0.8/hammer.min.js"></script>
<div id="canvas">
    <div id="one">
        One
    </div>
    <div id="two">
        Two
    </div>
</div>
<div id="log"></div>

CSS

#canvas {
    position: relative;
    float: left;
    width: 50%;
    height: 300px;
    background-color: gray;
}

#one {
    position: absolute;
    top: 50px;
    left: 50px;
    height: 100px;
    width: 100px;
    background-color: blue;
}

#two {
    position: absolute;
    top: 75px;
    left: 75px;
    height: 100px;
    width: 100px;
    background-color: red;
}

#log {
    float: right;
    width: 50%;
    height: 300px;
    overflow-y: scroll;
}

JavaScript

const log = text => {
	const logDiv = document.getElementById('log');
    
    logDiv.innerHTML += `<br />${text}`;
    logDiv.scrollTop = logDiv.scrollHeight;
};

const touchGestures = new Hammer(document.body);

touchGestures.get('swipe').set({
	direction: Hammer.DIRECTION_ALL
});

touchGestures.on('swipe', function (evt) {
	log(`swiped: ${evt.direction} or ${evt.offsetDirection}`);
});